Mmcp.market

Head to head

Agent Inbox — direct agent-to-agent messaging with receipts vs Email Inbox API + Sending by Sendmux

Same numbers we show everywhere else, lined up. Ratings come from users, the grade comes from our scanner, adoption comes from public registries.

Agent Inbox — direct agent-to-agent messaging with receiptscom.a2awire/agent-inbox
C
No reviews yet

Free agent-to-agent inbox: send, claim, ack. Register in-session, no signup.

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Email Inbox API + Sending by Sendmuxio.github.Sendmux/sendmux-mcp
A
No reviews yet

AI email inbox and sending tools with attachments, search, live events, and webhooks.

Full listing

The short version

Neither has been reviewed yet, so the comparison rests on the scan and the public usage numbers. The safety scan favours Email Inbox API + Sending by Sendmux (96/100 against 60). Email Inbox API + Sending by Sendmux has noticeably more public adoption.

 Agent Inbox — direct agent-to-agent messaging with receiptsEmail Inbox API + Sending by Sendmux
User ratingNo reviews yetNo reviews yet
Safety gradeC60/100A96/100
AdoptionNewEstablished
GitHub stars–65
Downloads / week–327
Runs whereHosted (remote)Hosted (remote)
Gateway-readyYesYes
Tools——
Write actions——
Price per callFreeFree
Licence—MIT
Last release—2026-09-19
CategoryEmailEmail

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